swapping video textures on sprite

[lookitscook]

I have an application in which I need to swap in image and video content live. Currently I do this by preloading all images and using 

mySprite.texture = PIXI.loader.resources[imageFilename].texture;

the videos will be too large to preload, so I'm trying to swap them in like so:

mySprite.texture = PIXI.Texture.fromVideoUrl(videoFilename);

is this the correct way to swap textures? should I be swapping in a whole new sprite or maybe just the BaseTexture?

When I try and add 

var myOldTexture = mySprite.texture;

//then I assign mySprite.texture the new content...
//...and then:

if(myOldTexture.baseTexture.source.play) //is video
 myOldTexture.texture.destroy(true)

I get a repeating "Uncaught TypeError: Cannot read property 'naturalWidth' of null" error, even though the texture I've destroyed shouldn't be in use at that point, right?

[lookitscook]

I solved this by changing the parent Sprite to a Container, then simply swapping in new Sprites for each video (instead of attempting to swap the texture on an existing Sprite). The old sprite (and texture, basetexture) is destroyed once the new one has been swapped in.